The cohesive properties of water (hydrogen bonding between adjacent water molecules) cause the water column to 'pull up' through the plant as water molecules evaporate on the surface of the leaf. This cycle was called the Sap Ascent Cohesion Theory in plants
Answer:
A. The DNA molecule opens up, separating into two strands.
B. Nucleotides match up and join the open DNA strands
C. Two new DNA molecules are formed.
B
An inorganic mineral is not composed of anything that was once alive
Explanation:
Organic minerals made from life. They mainly make up the biosphere and examples are minerals in plants and animals. Even after the death and decomposition of the living organisms, the minerals from the decomposition are considered organic. Organism matter is mainly made up of carbon and hydrogen.
Inorganic material, on the hand, are not derived from life and include substances like metal elements and inorganic salts.
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Answer:
Answer is D - cAMP.
Explanation:
cAMP is a small molecule that functions as an intracellular signaling molecule - a second messenger. The first messenger would be the thing that activated the GPCR (e.g. a hormone). The GPCR is a signal transducer (converts extracellular signal to intracellular signal). Once activated, the GPCR activates adenylate cyclase which can be called a signal effector - it is an enzyme that produces cAMP.